Hi, I was referred to you for a problem I am having with my Magnum, '06 R/T. Since having 6.1 exhaust manifolds and mids installed in 2011, I get intermittent CELs based on code 1129, saying the rear O2 sensors were swapped, which was true as new ones were put in the 6.1 mids. Problem is getting it smogged, can't believe the sensors are bad, but need it checked. You have a shop here in SoCal?
Thanks, Michael.
Thanks, Michael.